Moxa PT-7528-8MST-16TX-4GSFP-WV Managed Ethernet Switch (Rack Mount) IEC 61850-3 Power Substation certification with a total of 24 ports including 16 Fast Copper ports RJ45 (100 Mbps) and 8 Fast Fiber ports ST Multi-Mode (100 Mbps) with 4 Uplink Ports Gigabit Copper RJ45 (1000 Mbps). Operating Temperature: -40 to 185°F. Isolated 24-48 VDC Power Supply. The PowerTrans PT-7528 series is designed for power substation automation applications that operate in extremely harsh environments. The PT-7528 series supports Moxa’s new Noise Guard technology, is compliant with IEC 61850-3, and its EMC immunity exceeds IEEE 1613 Class 2 standards to ensure zero packet loss while transmitting at wire speed. The PT-7528 series also features critical packet prioritization (GOOSE, SMVs, and PTP), a built-in MMS server, and a configuration wizard designed specifically for substation automation. With Gigabit Ethernet, redundant ring, and 110/220 VDC/VAC isolated redundant power supplies, the PT-7528 series further increases the reliability of your communications and saves cabling/wiring costs. The wide range of PT-7528 models available support Multiple types of port configuration, with up to 28 copper or fiber ports and 4 gigabit ports for uplink. Taken together, these features allow greater flexibility, making the PT-7528 suitable for a variety of industrial applications.